Question

Describe the algae and please explain it

Answer 1

Answer:

Algae are eukaryotic organisms that have no roots, stems, or leaves but do have chlorophyll and other pigments for carrying out photosynthesis. Algae can be multicellular or unicellular. ... The chlorophyll and other pigments occur in chloroplasts, which contain membranes known as thylakoids.

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Answer 2

Answer:

Algae r a diverse group of aquatic organisms that r capable to conduct photosynthesis

Explanation:

Algae is the name given to a large and diverse group of oxygenic, phototrophic, eukaryotic microorganisms. Algae are eukaryotic, which means they have a nucleus. This differentiates them from bacteria and photosynthetic Cyanobacteria. They are oxygenic phototrophs, meaning they use light as their energy source for growth and produce oxygen as a byproduct, like plants.

But what distinguishes algae from plants is that algae do not have any tissue differentiation. Plants can differentiate their tissues into roots, trunks, and leaves, all very different tissue types. In contrast, algae are composed of cells that are generally all the same.

Despite the differences between plants and algae, many algal species are closely related to plants. But the algae are very diverse. Some algae, like Euglena, are closer evolutionarily to single-celled protozoa than to plants. The main unifying characteristic that determines if a species is considered an algae is that all algae contain or have a very recent ancestor that contained chlorophyll a.

Chlorophyllaaa

As usual, in biology there are several exceptions to the algae rules. Remember those Euglena that are more related to protozoa than plants? Some Euglena species will spontaneously lose their chloroplasts and continue living as free-swimming algae that feed by absorbing nutrients from the environment.

Another genus, Prototheca, has also lost its chloroplasts and become a parasite. Prototheca has been found on the skin and in joints of dogs and, more rarely, in humans, causing inflammation. But these are exceptions, as the vast majority of algae are obligate phototrophs.

Algal Diversity

The diversity also extends to other aspects of algal life. Many algae live and grow as single, microscopic cells. Others form long chains of cells called filaments. Still other algae, like some seaweeds, can form large aggregates of cells up to 50 meters long.

Algae can be found in nearly any environment that is moist and receives enough sunlight for growth. Wet soils and both fresh and salt water are usually teeming with algae. They are one of the major members of the oceanic phytoplankton community. Phytoplankton are the large populations of free-floating microbes found throughout the oceans. It is estimated that these planktonic algae and Cyanobacteria are responsible for 80% of the total photosynthesis on Earth.